EASY
8th Jammu and Kashmir Board
IMPORTANT
Earn 100

Burning of wood and coal causes of air. (purification/ pollution)

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Important Questions on Combustion and Flame

EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 2
A liquid fuel used in home is _____. (glycerine / kerosene)
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 2
Fuel must be heated to its _____ before it starts burning.
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 2
Fire produced by oil cannot be controlled by _____. (sand/water)
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 3
Explain how the use of CNG in automobiles has reduced pollution in our cities.
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 4
Compare LPG and wood as fuels.
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5
Give reason, why water is not used to control fires involving electrical equipment?
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5
Give reason, LPG is a better domestic fuel than wood.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 7 - Combustion and Flame>Exercises>Q 5
Give reason, paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.